<template>
    <div class="login">
        <section class="form_container">
            <div class="manage_tip">
                <span class="title">季夏二十一后台管理系统</span>
                <el-form :model="loginUser" :rules="rules" ref="loginForm" label-width="60px"
                                       class="loginForm">
                        <el-form-item label="邮箱" prop="email">
                            <el-input v-model="loginUser.email" placeholder="请输入Email"></el-input>
                        </el-form-item>
                        <el-form-item label="密码" prop="password">
                            <el-input type="password" v-model="loginUser.password" placeholder="请输入密码"></el-input>
                        </el-form-item>
                        <el-form-item>
                            <el-button type="primary" class="submit_btn" @click="submitForm('loginForm')">登录</el-button>
                        </el-form-item>
                        <el-form-item>
                            <div class="tiparea">
                                <p>还没有账号？现在
                                    <router-link to="/register">注册</router-link>
                                </p>
                            </div>
                    </el-form-item>
                </el-form>
            </div>
        </section>
    </div>
</template>

<script>

    import jwt_code from 'jwt-decode'

    export default {
        name: "login",
        components: {},
        data() {
            return {
                loginUser: {
                    email: "",
                    password: ""
                },
                rules: {
                    email: [{
                        type: "email",
                        required: true,
                        message: "邮箱格式不正确",
                        trigger: 'blur'
                    }],
                    password: [{
                        required: true,
                        message: "密码不能为空",
                        trigger: 'blur'
                    }, {
                        min: 6,
                        max: 30,
                        message: "密码长度在6-30个字符之间",
                        trigger: 'blur'
                    }]
                }
            }
        },
        methods: {
            submitForm(formName) {
                this.$refs[formName].validate((valid) => {
                    if (valid) {
                        this.$axios.post('/api/users/login', this.loginUser).then(res => {
                            //拿到token
                            // console.log(res)
                            const {token} = res.data
                            //存储到本地 localstorage
                            localStorage.setItem('eleToken', token)
                            //解析token
                            const decoded = jwt_code((token))
                            //测试是否正常解析
                            // console.log(decoded);
                            //将解析的token存储到Vue x中
                            this.$store.dispatch('setAuthenticated', !this.isEmpty(decoded))
                            this.$store.dispatch('setUser', decoded)

                            this.$router.push('/index')
                        })
                    } else {
                        console.log("error submit!!");
                        return false;
                    }
                });
            },
            //判断token是否存有内容,是否为空
            isEmpty(value) {
                return (
                    value === undefined ||
                    value === null ||
                    (typeof value === 'object' && Object.keys(value).length === 0) ||
                    (typeof value === 'string' && value.trim().length === 0)
                )
            }

        }
    }
</script>

<style scoped>
    .login {
        position: relative;
        width: 100%;
        height: 100%;
        background: url(../assets/img/bg.jpg) no-repeat center center;
        background-size: 100% 100%;
    }

    .form_container {
        width: 370px;
        height: 210px;
        position: absolute;
        top: 10%;
        left: 34%;
        padding: 25px;
        border-radius: 5px;
        text-align: center;
    }

    .form_container .manage_tip .title {
        font-family: "Microsoft YaHei";
        font-weight: bold;
        font-size: 26px;
        color: #fff;
    }

    .loginForm {
        margin-top: 20px;
        background-color: #ffffff;
        padding: 20px 40px 20px 20px;
        border-radius: 5px;
        box-shadow: 0px 5px 10px #cccccc;
    }

    .submit_btn {
        width: 100%;
    }

    .tiparea {
        text-align: right;
        font-size: 12px;
        color: #333;
    }

    .tiparea p a {
        color: #409eff;
    }
</style>